Again, purposely departing from the personality of the previous incarnation, the 5th doctor was much more eager to please and a lot more “sane” then his predecessor.

Always traveling with 2 or more companions, he was a lover of cricket and all things active. This version of the doctor shows the hints of the lonely, but energetic man he would become. The favorite incarnation of both the 10th Doctor and his actor David Tenant, he was the start of the new decade and a new direction for the entire series.

Earthshock: After preventing an apocalyptic explosion deep within the caverns of Earth, The Doctor suspects more dastardly work afoot aboard a spaceship where a squad of Cybermen intend to use the ship to destroy the Earth. (Adric dies at the conclusion of this episode)

The Five Doctors: The First Five incarnations of The Doctor are pulled out of time and space and are transported to the Death Zone on Gallifrey where they are forced to uncover the secret of the tomb of Rassilon. A secret which could grant someone immortality. (second multi-doctor episode)

Resurrection of the Daleks: The Daleks have liberated Davros to resurrect the Daleks from imminent destruction. But Davros seems to have an ulterior motive which seems to involve The Doctor for reasons unknown. (Tegan decides to leave the TARDIS in this episode.)

The Caves of Androzani: Upon arrival in Androzani Minor The Doctor and Peri catch Spectrox Toxaemia and immediately become involved in dealings of a corrupt politician, a mercenary, and a lonely, mad genius named Sharaz Jek and the smuggling of a rejuvenation drug. (The Fifth Doctor Regenerates)